see which is latest: http://support.amd.com/en-us/download/desktop?os=Linux+x86
see release notes: http://support.amd.com/en-us/kb-articles/Pages/Latest-LINUX-Beta-Driver.aspx


download with wget(if browser referer is broken, it is for me):

wget --referer="http://support.amd.com/en-us/download/desktop?os=Linux+x86" www2.ati.com/drivers/beta/linux-amd-catalyst-14.6-beta-v1.0-jul11.zip


if you don't use referer you end up on this page:
http://support.amd.com/en-us/download/incomplete

